In order to study the dynamic mechanical properties of steel fiber stainless steel concrete(SFSRC)beam under impact load,a super heavy multi-function drop weight impact test system was used to test four SFSRC beams with different doping rates.The results show that when the volume ratio of steel fiber increases from 0%to 2%,the impact force peak increases gradually,the mid-span displacement peak decreases gradually,the overall energy dissipation resistance capability increases gradually,and the failure mode transitions from bending and shear failure to bending failure.In the process of steel fiber volume mixing rate rising from 2%to 3%,the peak impact force of specimens grows slowly,while the peak mid-span displacement increases,and the failure mode transitions from bending failure to bending shear failure.The addition of steel fiber can obviously restrain the local damage in the contact area of the beam hammer and improve the impact stiffness of the specimen.With higher impact energy,compared with ordinary concrete,steel fiber reinforced concrete can give full play to the role of stainless steel reinforcement,showing better ductility.
NETL
NSTL
维普
万方数据
